50 
Psyche 
[September 
syntypes of clavata in MCZ. Mixco (W. M. Mann leg.). Mexico, 
Veracruz: Penuela, ca. 700 m. (H. S. Dybas leg.). Tetzonapa (Dy- 
bas leg.). Pueblo Nuevo, near Tetzonapa (E. O. Wilson leg.). Las 
Hamacas, 17 km. north of Santiago Tuxtla (Wilson leg.). 
Biology: S. suhedentata is primarily a species of the leaf litter and 
upper soil layers in mesic tropical forest. Nests have been found on 
the underside of a small log buried in leaf litter, in a small pocket in 
the soil, and among rotting leaves and twigs. In life, the workers 
are active huntresses, resembling workers of Strumigenys louisianae 
Roger in general appearance and behavior. E. O. Wilson (unpubl. 
notes) kept a colony from Veracruz alive and gave them a variety of 
small arthropods, among which they accepted as prey entomobryoid 
collembola, while ignoring over two days small millipeds, Reticuli- 
termes nymphs, a small isopod, and an undetermined soft-bodied mite. 
The colonies so far found have contained from about 20 to 90 work- 
ers and one or more queens. Wasmann (1915) records a sample 
taken in southeastern Brazil from a nest of the termite Anoplotermes 
ater (Hagen). 
Strumigenys trieces new species 
(Figure 8) 
Holotype worker: TL 2.3, HL 0.58, ML 0.28, WL 0.62 mm.; 
Cl 78, MI 48. Similar to S. suhedentata, but differing in the follow- 
ing characters: 
1. Head proper relatively longer and narrower, and slightly more 
depressed. 
2. Each inner mandibular margin with three small, acute, sub- 
equal teeth spaced out along its apical third. 
3. Alitrunk, particularly promesonotum, depressed and only 
weakly convex; constriction at metanotum only slight as seen from 
above ; metanotal groove obsolescent, marked by a broad, shallow dip 
in the dorsal profile as seen from the side. 
4. Petiole and postpetiole more massive (broader) than in suhe- 
dentata, the petiole with a shorter, thicker peduncle. Posterodorsal 
collar of petiole and ventral spongiform lobes of postpetiole a little 
larger than in suhedentata. 
5. Ground pilosity of head and alitrunk nearly or quite obsolete. 
Dorsum of head with three pairs of erect, slender remiform hairs, 
arranged as shown in Figure 8, except that the pair on the vertex is 
not shown in the figure. Similar slender, erect, remiform to truncate 
(or even bluntly pointed) hairs as follows: one pair on humeri; one 
